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Stack #645875

QuestionAnswer
the process by which organisms with variations most suited to their local environment survive and leave offspring Natural Selection
Difference in rates of survival and reproduction Survival of the fittest
when individuals at on end of the curve have higher fitness than others in the middle or other end Directional selection
mutations and the genetic recombination that occurs during sexual reproduction are both sources of _________. Genetic variation
A bird's wings and and an alligators claws are _________ structures. Homologous
Principle that states that allele frequencies in a population remain constant unless one or more factors cause those frequencies to change Hardy-Winberg Principle
Selection in which individuals of average size have greater fitness than small or large individuals Stabilizing selection
Nature provides the variations and humans select those they find useful Artificial selection
More are born than can survive; more natural heritable variation; fitness among individuals natural selection
A population must compete to obtain food, living space, and other necessities of life struggle for existence
the study of where organisms live now and where they and their ancestors lived in the past biogeography
a principle that states that an individual can pass on acquired traits inheritance of acquired traits
traits altered by an individual organism during its life acquired characteristics
cases in which one allele is not completely dominant over the other incomplete dominance
when individuals at the outre ends of the curve have higher fitness than individuals near the middle of the curve disruptive selection
single set of genes haploid
a change in allele frequency following a dramatic reduction in the size of a population bottleneck effect
random change in allele frequency genetic drift
specification occurred by founding a new population, geographic isolation, changes in the new population's gene pool, behavioral isolation and ecological competition Galapagos island hypothesis
the number of times an allele occurs in a gene pool, compared to the total number of alleles in that pool for the same gene allele frequency
in genetic terms involves a change in the frequency of alleles in population over time evolution
the remains of ancient organisms studied by Darwin fossils
concluded earth is extremely old and that the processes that changed earth in the past are the same as those in the present Hutton and Lyell
Suggested animals evolve from use and disuse and acquired characteristics can be passed on to offsprings Lamarck
Concluded that if the human population grew unchecked there wouldn't be enough living space and food for everyone Malthus
Created by: 1205876108
 

 



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